3117621 has 8 divisors (see below), whose sum is σ = 4476640. Its totient is φ = 1918512.

The previous prime is 3117601. The next prime is 3117623. The reversal of 3117621 is 1267113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3117621 - 2⁵ = 3117589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3117623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39931 + ... + 40008.

It is an arithmetic number, because the mean of its divisors is an integer number (559580).

Almost surely, 2^3117621 is an apocalyptic number.

It is an amenable number.

3117621 is a deficient number, since it is larger than the sum of its proper divisors (1359019).

3117621 is a wasteful number, since it uses less digits than its factorization.

3117621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79955.

The product of its digits is 252, while the sum is 21.

The square root of 3117621 is about 1765.6786230795. The cubic root of 3117621 is about 146.0857224744.

The spelling of 3117621 in words is "three million, one hundred seventeen thousand, six hundred twenty-one".